Results 101 to 110 of about 234,282 (231)

Microsphere Autolithography—A Scalable Approach for Arbitrary Patterning of Dielectric Spheres

Advanced Functional Materials, EarlyView.
MicroSphere Autolithography (µSAL) enables scalable fabrication of patchy particles with customizable surface motifs. Focusing light through dielectric microspheres creates well defined, tunable patches via a conformal poly(dopamine) photoresist. Nearly arbitrary surface patterns can be achieved, with the resolution set by the index contrast between ...
Elliott D. Kunkel, Alec G. Burnett, Katherine E. Scheiber, Hans D. Robinson   +3 more
wiley   +1 more source

Laser Speckle Suppression in Augmented Reality Displays Based on Static and Low-Loss Polymer-Stabilized Liquid Crystal Screens

IEEE Photonics Journal
Laser speckle caused by high coherence severely affects the image quality. The traditional optical approaches cannot effectively suppress speckles without compromising the coherence of the laser in the optical path.
Xin Jiang, Weilong Zhou, Wen Dong, Zhu Wang, Yifei Xie, Xinyue Tang, Zichun Le   +6 more
doaj   +1 more source

Remote Photoacoustic Sensing Using Single Speckle Analysis by an Ultra-Fast Four Quadrant Photo-Detector

Sensors, 2021
The need for tissue contact makes photoacoustic imaging not applicable for special medical applications like wound imaging, endoscopy, or laser surgery.
Benjamin Lengenfelder, Martin Hohmann, Moritz Späth, Daniel Scherbaum, Manuel Weiß, Stefan J. Rupitsch, Michael Schmidt, Zeev Zalevsky, Florian Klämpfl   +8 more
doaj   +1 more source

Logarithmic intensity and speckle-based motion contrast methods for human retinal vasculature visualization using swept source optical coherence tomography [PDF]

, 2012
We formulate a theory to show that the statistics of OCT signal amplitude and intensity are highly dependent on the sample reflectivity strength, motion, and noise power.
Cense, Fingler, Flammer, Friedman, Hope-Ross, Karamata, Lee, Liu, Liu, Makita, Makita, Mariampillai, Mariampillai, Patel, Pierce, Pircher, Schmitt, Schmoll, Szkulmowska, Vakoc, Vakoc, Wang, Wang, Wojtkowski, Yannuzzi, Yasuno   +25 more
core   +2 more sources

Multi-scale laser speckle contrast imaging of microcirculatory vasoreactivity.

Biomedical Optics Express, 2022
Laser speckle contrast imaging is a robust and versatile blood flow imaging tool in basic and clinical research for its relatively simple construction and ease of customization. One of its key features is the scalability of the imaged field of view. With
Blaire S. Lee, O. Sosnovtseva, C. Sørensen, D. Postnov   +3 more
semanticscholar   +1 more source

Laser‐Based Sculpturing of Embedded Ultrathin Metal‐Oxide Nanopores for Enhanced Biomolecular Sensing

Advanced Functional Materials, EarlyView.
Controlled laser‐drilling of embedded HfO2 membranes creates three layer nanopores with Gaussian‐shaped cavities sculptured in the supporting layers. These embedded solid‐state nanopores slow DNA translocation by 12‐fold compared to SiNx pores, enabling high‐resolution, label‐free detection of short DNAs, RNAs, and proteins.
Jostine Joby, Yulia Marom, Guocong Lin, Aleksandra Baron‐Wiechec, Amit Meller   +4 more
wiley   +1 more source

A Step-by-step Guide to the Realisation of Advanced Optical Tweezers [PDF]

, 2015
Since the pioneering work of Arthur Ashkin, optical tweezers have become an indispensable tool for contactless manipulation of micro- and nanoparticles.
Gigain, Sylvain, Jones, Philip H., Marago, Onofrio M., Pesce, Giuseppe, Sasso, Antonio, Volpe, Giorgio, Volpe, Giovanni   +6 more
core   +3 more sources

Transmissive-detected laser speckle contrast imaging for blood flow monitoring in thick tissue: from Monte Carlo simulation to experimental demonstration

Light: Science & Applications, 2021
Laser speckle contrast imaging (LSCI) is a powerful tool to monitor blood flow distribution and has been widely used in studies of microcirculation, both for animal and clinical applications. Conventionally, LSCI usually works on reflective-detected mode.
Dong-yu Li, Qing Xia, Tingting Yu, Jingtan Zhu, D. Zhu   +4 more
semanticscholar   +1 more source

Electrosynthesis of Bioactive Chemicals, From Ions to Pharmaceuticals

Advanced Functional Materials, EarlyView.
This review discusses recent advances in electrosynthesis for biomedical and pharmaceutical applications. It covers key electrochemical materials enabling precise delivery of ions and small molecules for cellular modulation and disease treatment, alongside catalytic systems for pharmaceutical synthesis.
Gwangbin Lee, Sojin Kim, Myeongeun Lee, Kyoungsuk Jin, Jimin Park   +4 more
wiley   +1 more source

Optical correlation techniques for the investigation of colloidal systems

, 2013
This review aims to provide a simple introduction to the application of optical correlation methods in colloidal science. In particular, I plan to show that full appraisal of the intimate relation between light scattering and microscopy allows designing ...
Adrian, Alaimo, Alaimo, Armstrong, Barnhart, Baumgartl, Berne, Born, Brambilla, Buzzaccaro, Cerbino, Cerbino, Chu, Cipelletti, Duri, Duri, Gatti, Giavazzi, Giglio, Giglio, Goodman, Goodman, Goodman, Han, Kubo, Lindken, Loudon, Mertz, Nemoto, Pusey, Pusey, Pusey, Raman, Rička, Secchi, Streibl, van de Hulst   +36 more
core   +1 more source